The Working techniques for chain saw Part Ⅰ

Chainsaw Training is designed to provide technical knowledge and skills to work, the safe operation of equipment.

Sizeup - This is the felling direction reconnaissance and planning security cuts danger zone and retreat path, start the saw. Tree location to other objects, support and secure the tension drop, split offs, or if the saw will jam. To consider several factors: lean and bent tree, wind direction, branch arrangements, snow load, barriers and damaged part of the tree to rot, which may result in unexpected behavior when cut. A tree might fall to its natural direction, if it is too dangerous or impossible to fall in the desired direction. The aim is to limbing a tree falling in love with logs and cross safely. Our goal is to avoid obstacles to make another tree or a tree falling. 

Cutting - Clear basis undergrowth tree retreat road, direction felled; cut properly completed three major cuts. To control the fall, directional shear line should run 1/4 of the diameter of the trees, a 45-degree wedge, which should be 90 degrees, and feel perfectly horizontal direction. Then top off the first undercut is made to form a wedge directed at the cutting line. Narrow or non-existent hinge mitigate deforestation directional control. From the opposite side of the wedge, and plans to complete the final cut tree felling diameter of 1/10 from the direction of the cutting line. Said undercut; felling cut horizontally and slightly inch (5.1 cm 1.5 to 2 inches) is made. When the hinge is correctly set, cutting down will start to fall in the desired direction. Sitback when the tree is moved back opposite to the predetermined direction. Felling wedge in place to prevent sitback cut from pinching the saw.


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